TW352388B - A process for preparing a phenolic resin molding material containing none or a small amount of free ammonia - Google Patents
A process for preparing a phenolic resin molding material containing none or a small amount of free ammoniaInfo
- Publication number
- TW352388B TW352388B TW085114816A TW85114816A TW352388B TW 352388 B TW352388 B TW 352388B TW 085114816 A TW085114816 A TW 085114816A TW 85114816 A TW85114816 A TW 85114816A TW 352388 B TW352388 B TW 352388B
- Authority
- TW
- Taiwan
- Prior art keywords
- selfcuring
- phenolic resin
- molding material
- free ammonia
- phenolic
- Prior art date
Links
Landscapes
- Phenolic Resins Or Amino Resins (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
A process for preparing a phenolic resin molding material either containing none of or a small amount of free ammonia comprises the direct crosslinking the selfcuring resol having at least one methylol functional group in one molecule, the non-selfcuring novolacor and other additives without drying, but directly through blending, cooling and granulation to form the phenolic molding material having none of less than 100 ppm free ammonia; in which the ratio of non-selfcuring novolac and the selfcuring resol is =1.0 (where the non-selfcuring phenolic resin % x the mole ratio of (F/P) formaldehyde and phenol reacted with non-selfcuring phenolic resin + the mole ratio of (F/P) formaldehyde and phenol or (F/M) of formaldyhyde and urea or 3 polycyanamide reacted with the selfcuring phenolic resin; the selfcuring resin is phenolic compound, and urea and 3-polycyanamide or their derivatives, and formaldehyde and its derivative will react under the presence of catalyst such as alkali metal, alkali earth oxide, or hydroxide, ammonia and amine compound or amino salt group.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW085114816A TW352388B (en) | 1996-11-30 | 1996-11-30 | A process for preparing a phenolic resin molding material containing none or a small amount of free ammonia |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW085114816A TW352388B (en) | 1996-11-30 | 1996-11-30 | A process for preparing a phenolic resin molding material containing none or a small amount of free ammonia |
Publications (1)
Publication Number | Publication Date |
---|---|
TW352388B true TW352388B (en) | 1999-02-11 |
Family
ID=57940046
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW085114816A TW352388B (en) | 1996-11-30 | 1996-11-30 | A process for preparing a phenolic resin molding material containing none or a small amount of free ammonia |
Country Status (1)
Country | Link |
---|---|
TW (1) | TW352388B (en) |
-
1996
- 1996-11-30 TW TW085114816A patent/TW352388B/en not_active IP Right Cessation
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
MK4A | Expiration of patent term of an invention patent |